I can't find my pen yet;in fact,I am not sure__I could have

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/03 17:49:20

I can't find my pen yet;in fact,I am not sure__I could have done with it
A.where
B.what
选B,A为什么不对呢?

i could have done (what) with it 我对我的笔到底做了什麽这里的什麽是what
而不是问把它放哪儿了所以不用where
如果是where 应该是where i could have put it之类的句子里缺什麽什麽可以带入到句子中就用什麽

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